Supercritical CO2 extraction of omega-3 rich oil from Sacha inchi (Plukenetia volubilis L.) seeds |
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| Affiliation: | 1. Departamento de Engenharia de Alimentos, Universidade Estadual de Campinas, 13083-862 Campinas, SP, Brazil;2. Departamento de Tecnologia de Alimentos, Universidade Estadual de Campinas, 13083-862 Campinas, SP, Brazil;1. Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE 68583-0919, USA;2. Center for Plant Science Innovation and Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA;3. Fonderephar, Université Toulouse 3, Faculté des Sciences Pharmaceutiques, F-31062 Toulouse cedex 09, France;1. School of Life Sciences, University of Science and Technology of China, Hefei 230027, China;2. Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan 666303, China;1. Instituto de Biotecnología (IBT), Universidad Nacional Agraria La Molina – UNALM, Av. La Molina s/n, Lima, Peru;2. Pontificia Universidad Católica de Valparaíso, School of Agronomy, Calle San Francisco s/n, La Palma, Quillota, Casilla 4-D, Chile |
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| Abstract: | Supercritical carbon dioxide (SC-CO2) was employed to extract omega-3 rich oil from Sacha inchi (Plukenetia volubilis L.) seeds and partially defatted cake. For ground seeds, the supercritical extraction was carried out at temperatures of 40, 50 and 60 °C and pressures of 300 and 400 bar, and for the cold pressed partially defatted cake, the extraction was carried out with 300 bar at 40 °C and with 400 bar at 60 °C. The global extraction yields (X0), oil solubility, fatty acid composition of the oil and tocopherol content were determined. The seed samples used in this work contained 54.3% oil, of which 50.5% was linoleinc acid (ω-3). The maximum extraction recovery for the seeds as 92% at 400 bar and 60 °C, but on one occasion a recovery of 99.1% oil was obtained when cold pressed extraction was employed, followed by supercritical extraction at 400 bar and 60 °C. A high tocopherol content of about 2–3 g/kg of oil was obtained. |
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